PHM-224 PH ORP Temperature 3-in-1 Combo Meter Tester Pen Type with Automatic Temperature Compensation

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Model: PHM-224

A waterproof meter designed to simultaneously measure pH and ORP in one go. It also reads temperature, which is continuously displayed on the dual level LCD. All pH readings are automatically temperature compensated (ATC). Measurements are highly accurate with a unique stability indicator right on the LCD. Comes with a removable electrode which can be replaced easily by the user. The housing has been completely 
sealed against humidity and designed to float.


  • Conforms with IP55 standard
  • Included calibration solution, pH4.01, pH6.86 & pH9.18
  • Waterproof and it floats!
  • With Automatic Temperature Compensation


  • Range: 0~14.00pH ; -1999~1999mV ; -50~70°C
  • Resolution: 0.01pH ; 1mV ; 0.1°C
  • Accuracy: ±0.1 pH ; ±5mV ; ±1°C
  • ATC:  0~50°C
  • Operating Environment:  0~50°C
  • Power Supply: 4 x 1.5V AG13 button battery
  • Size: 17 x 2.4 x 4cm
  • Weight: 85g (no battery)


  • 1 X PH ORP Meter
  • 1 x 4.01 pH Buffer Solution
  • 1 x 6.86 pH Buffer Solution
  • 1 x 9.18 pH Buffer Solution
  • 1 x Mini Screw Driver
  • English User Manual
  • Sturdy Carrying Case